Also mysql query cache is enabled
I didnt viewed the source code before, but I see a lot of debug info from W3TC. You can deactivate that and stop sending fat pages. Also, try deactivating memcached for a while and use disk:enhanced instead. And use mysql cache, via the mysql server and via W3TC.
Minify is known to be buggy in the current version of W3TC, so you will want to deactivate it.
Ok after a little more time looking at this and a clearer head I was able to determine where a lot of the speed issues were coming from.
The database where the advertising was kept was locking and causing slow queries. I now sync the data for the advertising in the background between the systems as to not have to make an external database call and free up time, as really the advertising storage database can be a storage engine only and only hits and clicks change with any regularity so a daily sync and null works for this.
Additionally there were a number of internal http: requests that were going on which were leading to speed issues, these requests were doing various things like loading HTML files via readfile or file_get_contents which is part of the forum integration, I changed this to a relative path and it cut the load time of those down significantly, saving my 5 seconds per load.
Once I rebooted the server to clear the locks on the database and start fresh, I changed the w3 total cache to use disk enhanced as suggested and now I am getting much faster load times averaging around 4 seconds with the majority of that being the core of wordpress and only 3% being plugins according to the p3 plugin profiler.
I am going to look at making the paths to the styles and the javascripts relative also which hopefully will shave a few more fractions of second off the load as we wont be running http requests to get them.
Cheers
Dan
Glad to hear.
Anyway, I see the site slow loading yet.
Have you tried loading objects to Amazon Cloudfront and/or using Cloudflare for double CDN purposes?
I recommend not to use the Cloudflare support from W3TC, but the official Cloudflare plugin instead.
Cloudfront is perfectly ok via W3TC.
Hmm loading fine for me now on all devices and different connections, odd it’s slow for you
Discard my point of view. I checked again and see your hosting is almost in my antipodes 🙂 I’m in South America and ping is almost 400 ms. If connections from your country and real target are quick enough, consider it a good job done 🙂